[sdiy] tr770 lost all his samples

[mailing gigaspeeds]

Hi Guys,

A friend of mine owns a roland tr770 that worked fine for years... When 
we power it up everything seems te be ok, you can program it etc, screen 
is ok, but no sounds anymore.
Seems like he lost his soundbank/samples somehow.
Appareantly one can *reupload* these sounds with a cartridge for the 
tr770. Does anyone have this or could point me to a good address ?

thx
Benjamin